Pipe attachment for wrenches.



No. 759,442. 'PATENTED MAY 10, 1904.

- s. J. HINMAN.

PIPE ATTACHMENT FOR WRENGHES.

APPLIOATION FILED SEPT. 23, 1903. N0 MODEL.

INVENTOR ,dfiwm aws/am y %ml%m 5% UNITED STATES Patented May 10, 1904.

PATENT OFFICE.

STEPHEN JOHN HINMAN, OF \VESTVILLE, CONNECTICUT.

PIPE ATTACHMENT FOR WRENCHES.

SPECIFICATION forming part of Letters Patent No. 759,442, dated May 10,1904. Application filed September 28, 1903. Serial No. 174,273. (Nomodel.)

To all whom, it may concern:

Be it known that I, STEPHEN JOHN HINMAN, a citizen of the United States,residing at Westville, in the county of New Haven and State ofConnecticut, have invented new and useful Improvements in PipeAttachments for Wrenches, of which the following is a specification.

My invention relates to certain new and useful improvements inpipe-wrench attachments, the object being to provide a simple,inexpensive, and effective attachment adapted to be secured to the shankof an ordinary monkeywrench and to fit between the jaws thereof andprovided with intermediate serrated jaws adapted to grip the pipe, sothat the wrench to which my attachment is secured may be effectivelyused upon round pipes or rods in the same manner as the ordinary wrenchis used upon angular nuts.

A further object of my invention is to provide a simple device of theclass described that can quickly and easily be secured to any wrench andused in connection therewith.

My invention consists in the novel construction and arrangement of partshereinafter fully described, illustrated, and claimed.

In the drawings accompanying the specification and forming a partthereof, Figurel is a side elevation showing my device attached to anordinary monkey-wrench. .Fig. 2 is a pieces are of the same shape as thejaws d, but are formed so as to leave a blank space between the serratedjaws at the point where the teeth are set, as shown at f, in order topermit the fur of the metal caused by the gripping of the pose.

teeth upon a pipe or red to settle between the aws.

g is a removable member with a notch it therein, as shown, which allowsit to be fitted snugly on the pin or bolt 0, the end of which extendsbeyond the serrated jaws for that purvided with a locking-clip 2',adapted to engage with and settle into a kerf it in the end of the rigidmember in order to hold the removable member firmly in place when thedevice is secured to a wrench.

In operation the rigid member 6 is placed upon the shank of a wrench, soas to bring the back of the serrated jaws tight against the shank withthe teeth facing the opening between the jaws of the Wrench. The deviceis so constructed, it will be readily observed, that the back thereofmay rest upon either the rigid or removable jaw of the wrench, as may bedesired. The removable member is then put in place, with the notch 7tfitting over the end of the pin or bolt 0. The device is theneffectively secured in place on the wrench by pressing the locking-clipinto the kerf It.

My device may be made of any desired size, so that it will fit anyordinary wrench, and. while when detached the serrated jaws and thespacing-pieces swing loosely on the pin or bolt 0 it will be observedthat when the same is fitted on the shank of a wrench the jaws andspacing-pieces are held rigidly and firmly in place and are immovable.

Certain modifications of form and arrangement of parts may suggestthemselves to the skilled mechanic; but such modifications andarrangements come well within the scope and spirit of my invention asdisclosed and claimed, and I therefore do not desire to be limited tothe precise construction and arrangement shown.

Having thus described my said invention, what I claim as new, and desireto secure by Letters Patent, is-

l. A pipe-wrench attachment for monkeywrenches, having a plurality ofangular serrated jaws disposed between two side members, substantiallyas described.

2. A pipe-wrench attachment for monkey- The removable member 1 is alsoprowrenches, having a'j aw with a plurality of serrations, and withintermediate spaces between the serrations, substantially as described.

3. A pipe-wrench attachment for monkeywrenches, having a plurality ofangular serrated jaws disposed between a rigid and a removable member,and a plurality of spacingpieces disposed between the jaws,substantially as described.

4. A pipe-wrench attachment for monkeywrenches, having a plurality ofangular serratedjaws disposed between two side members, a plurality ofspacing-pieces disposed between the jaws, and a locking-clip,substantially as described.

5. A pipe-wrench attachment for monkeywrenches, having a plurality ofangular serrated jaws disposed between a rigid and a removable member, aplurality of spacing-pieces disposed between the jaws, and alocking-clip, substantially as described.

6. A pipe-Wrench attachment for monkey- A wrenches, having a pluralityof serrated jaws disposed between two side members, and provided withintermediate spaces between the serrations on the difierent jaws,substantially as described.

7 A pipe-wrench attachment for monkeywrenches, having a rigid and aremovable member, a plurality of angular serrated jaws pivoted betweenthe members, a plurality of spacing-pieces disposed between the jaws,and a locking-clip, substantially as described.

8. A pipe-wrench attachment for monkeywrenches, having a plurality ofserrated jaws disposed between two side members, a pivot, a plurality ofspacing-pieces disposed between the jaws, and a locking-clip adapted toengage with a kerf, substantially as described.

9. In a pipe-wrench attachment for monkeywrenches, a rigid memberprovided with a pin, a plurality of angular serrated jaws withspacing-pieces disposed between them, and adapted to swing on the pin, aremovable member, a notch or kerf therein adapted to fit on the end ofthe pin, and a locking-clip adapted to engage with a kerf in the end ofthe rigid member, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

STEPHEN JOHN HINMAN.

Witnesses:

P' R. GREIsT, \V. G. GREIsT.

